Finding the Fourth Proportional to 445,355,442.40, 668,201,125.20 and 215,527,986.40
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Solution
The fourth proportional to 445,355,442.40, 668,201,125.20 and 215,527,986.40 is: 323,373,263.95
Step by Step Solution
- Step 1: Write the proportion equation
445,355,442.40 : 668,201,125.20 = 215,527,986.40 : x - Step 2: Convert to fraction form
445,355,442.40/668,201,125.20 = 215,527,986.40/x - Step 3: Cross multiply
445,355,442.40x = 668,201,125.20 × 215,527,986.40 - Step 4: Simplify right side
445,355,442.40x = 144,016,043,024,570,304 - Step 5: Solve for x
x = 144,016,043,024,570,304/445,355,442.40 - Step 6: Final answer
x = 323,373,263.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.